(19)
(11) EP 2 060 370 B1

(12) EUROPEAN PATENT SPECIFICATION

(45) Mention of the grant of the patent:
07.09.2011 Bulletin 2011/36

(21) Application number: 07791566.8

(22) Date of filing: 30.07.2007
(51) International Patent Classification (IPC): 
B26B 1/08(2006.01)
A61B 17/3211(2006.01)
(86) International application number:
PCT/JP2007/064881
(87) International publication number:
WO 2008/029566 (13.03.2008 Gazette 2008/11)

(54)

HAND TOOL

HANDWERKZEUG

OUTIL À MAIN


(84) Designated Contracting States:
DE FR GB

(30) Priority: 08.09.2006 JP 2006243916

(43) Date of publication of application:
20.05.2009 Bulletin 2009/21

(73) Proprietor: Kai R & D Center Co., Ltd.
Seki-shi, Gifu 501-3992 (JP)

(72) Inventor:
  • ENDO, Masahiro
    Gifu 501-3992 (JP)

(74) Representative: Novagraaf Technologies 
122 rue Edouard Vaillant
92593 Levallois-Perret Cedex
92593 Levallois-Perret Cedex (FR)


(56) References cited: : 
JP-A- 11 115 377
US-A- 2 226 324
US-A- 2 885 779
US-A- 3 176 395
JP-U- 06 055 796
US-A- 2 885 779
US-A- 3 176 395
US-B1- 6 948 250
   
       
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description

    TECHNICAL FIELD



    [0001] The present invention relates to a hand tool, or, for example, a medical edged tool, having an accommodated state, in which a functional portion such as a blade body is accommodated in a holder, and a projected state, in which the functional portion projects from the holder.

    BACKGROUND ART



    [0002] Conventionally, a hand tool, which is, for example, a medical edged tool, includes a functional portion such as a blade body and a holder in which the functional portion is accommodated. The functional portion is bent and moves relative to the holder in such a manner that the hand tool is switched between an accommodated state and a projected state of the functional portion (see, for example, Japanese Laid-Open Patent Publication No. 7-47075

    [0003] Document US2885779 discloses a penknife clipper comprising a main barrel housing defining a longitudinal guide slot, a carrier slidably supported within said slot for reciprocating longitudinal movement, a blade pivotally supported upon said carrier, actuating means selectively extending and retracting said blade relative to said housing, an enlarged slot at one end of said housing in communication with said guide slot accommodating limited pivotal movement of said blade upon said carrier within said slot about an axis extending normal to the longitudinal axis of said housing, said actuating means comprising a threaded stud rotatably supported at the opposite end of said housing, and said carrier comprising a cylinder threadingly engaged with said stud for reciprocating longitudinal movement within said housing in response to rotation of said stud, and a spring secured at one end to said cylinder having an opposite end in pressure engagement with said blade resiliently resisting movement of said blade about said axis extending normal to the longitudinal axis of said housing.

    [0004] Document US2226324 discloses a net mending tool comprising a body having a working point at its forward end, said body being formed with a longitudinal recess opening through a longitudinal edge thereof, a knife mounted substantially entirely within said recess longitudinally inwardly from said working point, assembling means mounting said knife for longitudinal movement toward and away from said working point, and means operative to project the forward end portion of said knife in a lateral direction beyond said longitudinal edge as the knife is moved forwardly so as to expose the knife for cutting in a position immediately adjacent to said working point, said longitudinal edge of the body being formed with a cut out portion, and said knife having an operating element exposed by said cut out portion, said means comprising a cam surface within said recess with which a portion of the knife is engageable.

    SUMMARY OF THE INVENTION



    [0005] However, if the functional portion such as the blade body is bent but an inlet opening of the holder is not sized sufficiently large for the functional portion, the functional portion cannot be accommodated in the holder. As a result, the conventional hand tool disadvantageously has a holder with a large-sized inlet opening, which, in turn, increases the size of the holder as a whole.

    [0006] Accordingly, it is an objective of the present invention to reduce the size of an inlet opening of a holder of a hand tool such as a medical edged tool by improving operation of a functional portion both in an accommodated state and a projected state.

    [0007] In order to achieve the foregoing objective and in accordance with a first aspect of the present invention, a hand tool having a holder and a movable head portion to which a functional portion is secured is provided. The movable head portion is supported by the holder in a manner movable relative to the holder between an accommodated state, in which the movable head portion is accommodated in the holder together with the functional portion, and a projected state, in which the functional portion is projected from the holder. The orientation of the functional portion in the accommodated state and the orientation of the functional portion in the projected state are different from each other. This structure is suitable particularly for a hand tool having a bendable functional portion. Specifically, the orientation of the functional portion is changed so that the functional portion is switched from the projected state, which facilitates use of the functional portion, to the accommodated state, which facilitates accommodation of the functional portion. This reduces the size of the inlet opening of the holder, which accommodates the functional portion. The hand tool further includes a manipulation body that supports the movable head portion, and the manipulation body allows the movable head portion to move between the accommodated state and the projected state. As a result, the movable head portion is easily moved between the accommodated state and the projected state. The manipulation body also includes an elastic body that applies an elastic force to the movable head portion between the accommodated state and the projected state, and the elastic body causes the movable head portion to incline. As a result, the movable head portion is easily inclined between the accommodated state and the projected state by means of the elastic body. The movable head portion is accommodated in the holder by the elastic force of the elastic body, and the movable head portion projects the functional portion from the holder against the elastic force of the elastic body. As a result, the movable head portion is further easily inclined between the accommodated state and the projected state by means of the elastic body.

    [0008] In the above described configuration, it is preferable that the movable head portion incline when moving relative to the holder between the accommodated state and the projected state. As a result, the functional portion is easily projected from and retracted into the inlet opening of the holder.

    [0009] In the above configuration, it is preferable that the holder and the movable head portion include a guiding/restricting portion that guides the movable head portion in a manner movable relative to the holder between the accommodated state and the projected state and allows the movable head portion to incline. As a result, the movable head portion is smoothly inclined by means of the guide and restricting portion.

    [0010] In the above configuration, it is preferable that the manipulation body further include a manipulating portion having a finger support portion, and that the elastic body be arranged between the manipulating portion and the movable head portion, and wherein the movable head portion is supported by the elastic body. As a result, the elastic body that urges the movable head portion becomes compact with respect to the manipulation body.

    [0011] In the above configuration, it is preferable that the manipulating portion and the elastic body of the manipulation body be formed integrally with the movable head portion. As a result, the manipulation body and the movable head portion are easily provided.

    [0012] In the above configuration, it is preferable that the guiding/restricting portion of the movable head portion be a guide projection, and that the guiding/restricting portion of the holder includes a pressing portion that presses and contacts the guide projection of the movable head portion and a pressing escape hole that releases the guide projection from pressing and contacting. This simplifies the configuration of each guiding/restricting portion.

    [0013] In accordance with a second aspect of the present invention, a hand tool having a holder and a movable head portion to which a functional portion is secured is provided. The movable head portion is supported by the holder in a manner movable relative to the holder between an accommodated state, in which the movable head portion is accommodated in the holder together with the functional portion, and a projected state, in which the functional portion is projected from the holder. The position of the functional portion in the accommodated state and the position of the functional portion in the projected state are different in a longitudinal direction of the holder and in a direction perpendicular to the longitudinal direction. This structure is suitable particularly for a hand tool having a bendable functional portion. Specifically, the position of the functional portion is changed so that the functional portion is switched from the projected state, which facilitates use of the functional portion, to the accommodated state, which facilitates accommodation of the functional portion. This reduces the size of the inlet opening of the holder in which the functional portion is accommodated.

    BRIEF DESCRIPTION OF THE DRAWINGS



    [0014] 

    Fig. 1(a) is an exploded side view showing a medical edged tool according to one embodiment of the present invention, with a core member removed from the holder;

    Fig. 1(b) is a cross-sectional side view showing the holder;

    Fig. 2(a) is a side view illustrating a blade body in a projected state;

    Fig. 2(b) is a partial cross-sectional view showing the blade body in the state of Fig. 2(a);

    Fig. 3 (a) is a plan view showing the blade body in a projected state;

    Fig. 3(b) is a partial cross-sectional view showing the blade body in the state of Fig. 3(a);

    Fig. 4(a) is a partial cross-sectional view showing the blade body in a transitional state between the projected state and the accommodated state;

    Fig. 4(b) is a plan view showing the blade body in the state of Fig. 4(a);

    Fig. 5 (a) is a side view showing the blade body in the accommodated state;

    Fig. 5(b) is a partial cross-sectional view showing the blade body in the state of Fig. 5(a);

    Fig. 6(a) is a side view showing the blade body in the accommodated state;

    Fig. 6(b) is a partial cross-sectional view showing the blade body in the state of Fig. 6(a);

    Fig. 7(a) is a plan view showing a portion of Fig. 3(a) held in a locked state;

    Fig. 7(b) is a cross-sectional view taken along line 7b-7b of Fig. 7 (a) ;

    Fig. 8(a) is a plan view showing a portion of Fig. 3 (a) held in an unlocked state;

    Fig. 8(b) is a cross-sectional view taken along line 8b-8b of Fig. 8(a);

    Fig. 9(a) is a plan view showing a portion of Fig. 6(a) held in the unlocked state;

    Fig. 9(b) is a cross-sectional view taken along line 9b-9b of Fig. 9(a);

    Fig. 10(a) is a plan view showing a portion of Fig. 6(a) held in the locked state;

    Fig. 10(b) is a cross-sectional view taken along line 10b-10b of Fig. 10(a);

    Fig. 11(a) is a cross-sectional view taken along line 11a-11a of either Fig. 3(a) or Fig. 6(a);

    Figs. 11(b), 11(c), and 11(d) are diagrams corresponding to Fig. 11(a), each showing an engagement projection and an engagement recess of a modification;

    Fig. 12(a) is a cross-sectional view schematically showing a portion of a blade body of a modification held in an accommodated state; and

    Fig. 12(b) is a cross-sectional view schematically showing a portion of the blade body held in a projected state.


    BEST MODE FOR CARRYING OUT THE INVENTION



    [0015] A hand tool according to one embodiment of the present invention will now be described with reference to the attached drawings. The hand tool of the embodiment is a medical edged tool. As shown in Figs. 1(a) to 6(b), a holder 1 of the medical edged tool includes an outer circumferential wall 2 having an elongated cylindrical shape extending along the longitudinal direction X of the holder 1. An inner bore 3, which is provided in the space surrounded by the outer circumferential wall 2, is open at a front opening 4, or an inlet opening at the front end of the holder 1, and a rear opening 5, which is provided at the rear end of the holder 1.

    [0016] A pressing portion 6, or a guiding/restricting portion, is provided in an upper portion of the outer circumferential wall 2 in the up-and-down direction Z of Fig. 2(a) and extends rearward from the front opening 4. A pressing escape hole 7, or an escape portion formed continuously from the pressing portion 6 through a step 6a, is formed in the upper portion of the outer circumferential wall 2 and extends rearward. The inner bore 3 is exposed to the exterior through the pressing escape hole 7. A guide groove 8, or an escape portion, is provided in a lower portion of the outer circumferential wall 2 in the up-and-down direction Z of Fig. 2(a) and extends rearward from the front opening 4. The guide groove 8 faces the pressing portion 6 and the pressing escape hole 7. A receiving portion 9, which is formed continuously from the guide groove 8 through a step 8a, is provided in the lower portion of the outer circumferential wall 2 and extends rearward. The receiving portion 9 faces the pressing escape hole 7.

    [0017] A guide hole 10 extends along the longitudinal direction X at a position slightly rearward from the pressing escape hole 7 in the upper portion of the outer circumferential wall 2. Engagement recesses 11, 12, or engagement portions extending in the circumferential direction R of the holder 1, are provided at a front end portion and a rear end portion of the guide hole 10. Specifically, the engagement recess 11 is provided at the front end portion of the guide hole 10 and the engagement recess 12 is formed at the rear end portion of the guide hole 10. As illustrated in Figs. 7(a) to 10(b), end portions 11a and end portions 12a, each serving as a stopper portion, are formed at both front and rear end portions of the engagement recess 11 and the engagement recess 12, respectively. The holder 1 is formed of polycarbonate resin by injection molding. The components forming the holder 1 are molded as an integral body and the holder 1 is transparent.

    [0018] A core member 13 of the medical edged tool includes a manipulation body 14 and a movable head portion 21. The manipulation body 14 has a manipulating portion 15 formed mainly by a movable rod 16 and a leaf spring portion 17 serving as an elastic body extending forward from a lower portion of the front end of the movable rod 16. A base plate 18 having a cantilevered shape extends forward from an upper portion of the front end of the movable rod 16. An engagement projection 19 projects from the base plate 18. With reference to Fig. 11(a), a brim 19a serving as a stopper portion projects from each one of a front end portion and a rear end portion of the engagement projection 19. A finger support portion 20 is formed at a rear end portion of the movable rod 16.

    [0019] A proximal portion of the movable head portion 21 is supported by a distal portion of the leaf spring portion 17 at a position forward from the engagement projection 19 on the base plate 18. Guide projections 22, 23 project from both upper and lower end portions of the movable head portion 21. Specifically, the guide projection 22 is formed on the upper end portion of the movable head portion 21 and the guide projection 23 is provided at the lower end portion of the movable head portion 21. The guide projections 22, 23, the pressing portion 6, the pressing escape hole 7, the guide groove 8, and the receiving portion 9 form a guiding/restricting portion. A blade body 24, or a functional portion, is secured to a distal surface 21a of the movable head portion 21. The blade body 24 has a support plate portion 24a extending forward from the distal surface 21a of the movable head portion 21 and a blade plate portion 24b extending diagonally upward from a distal portion of the support plate portion 24a. The blade body 24 is formed of stainless steel. The core member 13, which is configured by the movable head portion 21 and the manipulation body 14, is formed of polybutadiene terephthalate resin. The components forming the core member 13, except for the blade body 24, are molded as an integral body.

    [0020] To insert the core member 13 into the holder 1 and engage the core member 13 with the holder 1, the finger support portion 20 of the movable rod 16 is inserted into the holder 1 from the front opening 4 of the holder 1 and thus projected from the rear opening 5. At this stage, the base plate 18 flexibly deforms in the up-and-down direction Z against the elastic force of the base plate 18. The engagement projection 19 on the base plate 18 is thus allowed to move along the inner circumference of the outer circumferential wall 2 and engaged with the guide hole 10. The finger support portion 20 is always exposed from the rear opening 5 located at a position opposite to the front opening 4 from which the movable head portion 21 is selectively projected from and retracted into the holder 1. On the outer circumferential surface of the outer circumferential wall 2, the arrows illustrated at positions in front of and at the rear of the guide hole 10, each represent a movement direction of the engagement projection 19 when the engagement projection 19 is operated.

    [0021] In a projected state P, as illustrated in Figs. 2(a) to 3(b), in which a front portion of the movable head portion 21 and the blade body 24 project outward from the front opening 4 of the holder 1, the engagement projection 19 is located in the engagement recess 11 and thus prevented from moving in the longitudinal direction X, as illustrated in Figs. 7(a) and 7(b). In this state, the engagement projection 19 is engaged with the engagement recess 11. This locks the core member 13 in the projected state P. In this state, with reference to Fig. 11(a), the brims 19a of the engagement projection 19 contact the end portions 11a of the engagement recess 11 despite the fact that the base plate 18 is flexibly deformed and received in the holder 1. This prevents the engagement projection 19 from entering the holder 1. In the movable head portion 21, the guide projection 22, or particularly an inclined surface 22a of the guide projection 22, is pressed downward by the pressing portion 6 against the elastic force of the leaf spring portion 17. The distal surface 21a thus becomes inclined upward and the guide projection 23 is received in the guide groove 8. The guide projection 23 is thus prevented from pivoting in the circumferential direction R about the axis 16a of the movable rod 16. In this state, the guide projection 23 is engaged with the guide groove 8. Further, the outer circumferential surface of a portion of the movable head portion 21 located slightly forward from the guide projections 22, 23 contacts the inner circumferential surface of the outer circumferential wall 2 including the pressing portion 6. This stops the movable head portion 21 from moving in the up-and-down direction Z or the left-and-right direction Y, thus stably maintaining the movable head portion 21 in the projected state P.

    [0022] In the projected state P, the finger support portion 20 is gripped and the movable rod 16 is twisted relative to the holder 1 in the circumferential direction R about the axis 16a of the movable rod 16 against the elastic force of the leaf spring portion 17. In this state, with the movable head portion 21 fixed without rotating relative to the holder 1, the engagement projection 19 is released from the engagement recess 11 and received in the guide hole 10, as illustrated in Figs. 8(a) and 8(b). This unlocks the core member 13 from the projected state P. Anti-slip serrations are formed on the outer circumference of the finger support portion 20, thus allowing the movable rod 16 to be easily twisted.

    [0023] As illustrated in Figs. 4(a) and 4(b), the movable rod 16 is pulled rearward while twisted with the finger support portion 20 held in a gripped state. In this state, the engagement projection 19 is moved along the guide hole 10 and sent to a position adjacent to the engagement recess 12, as viewed in Figs. 9 (a) and 9(b). In such movement of the engagement projection 19, the guide projection 22 of the movable head portion 21 is released from the pressing portion 6 and received in the pressing escape hole 7, as illustrated in Figs. 5(a) to 6(b). Meanwhile, the guide projection 23 is disengaged from the guide groove 8 and supported by the receiving portion 9. In this state, the guide projection 22 is engaged with the pressing escape hole 7. Then, the elastic force of the leaf spring portion 17 causes the leaf spring portion 17 to restore its upper position so that the distal surface 21a becomes inclined downward. If the engagement projection 19 is arranged in the guide hole 10, the guide hole 10 receives the twisting force of the movable rod 16. After the movable rod 16 is released from gripping and the movable head portion 21 becomes fixed without rotating relative to the holder 1, as illustrated in Fig. 10(a) and 10(b), the elastic force of the leaf spring portion 17 causes the movable rod 16 to restore its original position, canceling the twisting force of the movable rod 16. Further, the engagement projection 19 automatically enters the engagement recess 12 and is thus prevented from moving in the longitudinal direction X. This locks the core member 13 in an accommodated state Q. In this state, the engagement projection 19 is engaged with the engagement recess 12.

    [0024] When shifting from the projected state P to the accommodated state Q, the movable head portion 21 and the blade body 24 become inclined so that the orientations N of the movable head portion 21 and the blade body 24 are changed by approximately 12 degrees as illustrated in Figs. 2(b), 4(a), and 5(b). In other words, in the projected state P, the blade plate portion 24b of the blade body 24 is projected outside of the range S defined by extending the front opening 4 of the holder 1 in the longitudinal direction X. In the accommodated state Q, the movable head portion 21 and the blade body 24 are inclined downward and held within the range S.

    [0025] In the accommodated state Q, the finger support portion 20 is gripped and the movable rod 16 is twisted relative to the holder 1 in the circumferential direction R about the axis 16a of the movable rod 16 against the elastic force of the leaf spring portion 17. In this state, while the movable head portion 21 is maintained fixed without rotating relative to the holder 1, the engagement projection 19 is disengaged from the engagement recess 12 and received in the guide hole 10 as illustrated in Figs. 9(a) and 9(b). This unlocks the core member 13 from the accommodated state Q.

    [0026] with reference to Figs. 4(a) and 4(b), the movable rod 16 is pressed forward while held in a twisted state with the finger support portion 20 gripped. This moves the engagement projection 19 along the guide hole 10 and sends the engagement projection 19 to the position adjacent to the engagement recess 11 as illustrated in Figs. 8(a) and 8(b). In such movement of the engagement projection 19, the guide projection 22 of the movable head portion 21 is separated from the pressing escape hole 7 and, particularly, the inclined surface 22a of the guide projection 22 is pressed downward by the pressing portion 6 as shown in Figs. 2(a) to 3(b). Further, the guide projection 23 is separated from the receiving portion 9 and enters the guide groove 8, and the leaf spring portion 17 flexibly deforms downward against the elastic force of the leaf spring portion 17 so that the distal surface 21a becomes inclined upward. In this state, the guide projection 23 becomes engaged with the guide groove 8. After the movable rod 16 is released from gripping and the movable head portion 21 is maintained fixed without rotating relative to the holder 1 as illustrated in Figs. 7(a) and 7(b), the elastic force of the leaf spring portion 17 causes the movable rod 16 to restore its original position, canceling the twisting force of the movable rod 16. Further, the engagement projection 19 automatically enters the engagement recess 11 and is thus prevented from moving in the longitudinal direction X. This locks the core member 13 in the projected state P. In this state, the engagement projection 19 is engaged with the engagement recess 11.

    [0027] Serrations 2a are formed on the outer circumference of the front portion of the outer circumferential wall 2. The fingers contact the serrations 2a when a surgery is performed or the core member 13 is projected or retracted. A mounting projection 5a, which prevents rolling of the holder 1, is formed along the outer circumference of a rear end portion of the outer circumferential wall 2.

    [0028] The length of the medical edged tool as a whole in the longitudinal direction X is set to approximately 142 mm in the projected state P illustrated in Figs. 2(a) to 3(b). The length of the medical edged tool as a whole in the longitudinal direction X in the accommodated state Q illustrated in Figs. 5(a) to 6(b) is set to approximately 145 mm. The height of the holder 1 in the up-and-down direction Z is set to approximately 9 mm. The height of the front opening 4 in the up-and-down direction Z, or the height of the range S in the up-and-down direction Z, is set to approximately 6.4 mm. The maximum movement distance of the movable head portion 21 in the longitudinal direction X is set to approximately 22 mm. The twisting angle of the movable rod 16 is set to 10 to 45 degrees, or, preferably, 15 to 30 degrees, with easy manipulation by the user and the twisting strength of the movable rod 16 taken into consideration. In the leaf spring portion 17 in the states illustrated in Fig. 1(a) and Figs. 5(a) to 6(b), the length between the movable rod 16 and the movable head portion 21 in the longitudinal direction X is set to approximately 40 mm. The thickness in the vicinity of the movable head portion 21 in the up-and-down direction Z is set to approximately 1.0 mm. The thickness in the vicinity of the movable rod 16 in the up-and-down direction Z is set to approximately 1.4 mm. The width in the vicinity of the movable head portion 21 in the left-and-right direction Y is set to approximately 3.7 mm. The width in the vicinity of the movable rod 16 in the left-and-right direction Y is set to approximately 4.5 mm. In other words, the portion of the leaf spring portion 17 in the vicinity of the movable head portion 21 is thin with a smaller thickness and narrow with a smaller width. This makes it easy for the portion to be twisted in the circumferential direction R and flexibly deformed in the up-and-down direction Z.

    [0029] As a result, the hand tool of the illustrated embodiment is suitable particularly as the medical edged tool with the bendable blade body 24. Specifically, the orientation N of the blade body 24 is changed between the accommodated state Q and the projected state P. The blade body 24 is thus easily accommodated. This decreases the size of the front opening 4 of the holder 1 and thus provides a compact holder 1. Also, such sizing saves wrapping material.

    [0030] The illustrated embodiment may be modified as follows.

    [0031] In the illustrated embodiment, the brims 19a each serving as a stopper portion are formed at both of the front and rear end portions of the engagement projection 19 as illustrated in Fig. 11(a). However, the brim 19a may be provided only in one of the front and rear end portions of the engagement projection 19. With reference to Fig. 11b, extended stopper portions 19a, 11a, 12a may be formed at both front and rear end portions of the engagement projection 19 and both front and rear end portions of each engagement recess 11, 12. As illustrated in Fig. 11(c), stopper portions 11a, 12a each having a stepped shape may be provided at both front and rear end portions of each engagement recess 11, 12. With reference to Fig. 11(d), the stopper portions may be omitted from both the engagement projection 19 and the engagement recesses 11, 12. Alternatively, although not illustrated, three or more engagement recesses 11, 12 may be formed along the guide hole 10.

    [0032] As illustrated in Figs. 12(a) and 12(b), the blade body 24 may be translated without changing the orientation N between the accommodated state and the projected state. In this state, the position of the blade body 24 in the accommodated state and the position of the blade body 24 in the projected state is changed by the distance L in the longitudinal direction X of the holder 1 and by the distance W in the up-and-down direction Z of the holder 1 perpendicular to the longitudinal direction X. Although not illustrated, the position of the blade body 24 in the accommodated state and the position of the blade body 24 in the projected state may be changed by the distance W in the left-and-right direction Y of the holder 1 perpendicular to the longitudinal direction X.

    [0033] In the blade body 24, the bending angle of the blade plate portion 24b with respect to the support plate portion 24a is set to approximately 45 degrees. However, the bending angle may be set to an angle other than approximately 45 degrees. The bending portion may have a curved shape or a plurality of bending portions may be provided. Such modifications may be made also in a case in which a component other than the blade body 24 is employed as the functional portion.

    [0034] Various suitable structures may be employed as the guiding/restricting portion instead of the guide projections 22, 23 of the movable head portion 21, the pressing portion 6, the pressing escape hole 7, the guide groove 8, and the receiving portion 9 of the holder 1.

    [0035] The movable head portion 21 and the leaf spring portion 17 may be provided separately and secured to each other. Alternatively, the leaf spring portion 17 and the movable rod 16 may be provided separately and secured to each other.

    [0036] Various suitable mechanisms other than the mechanism of the illustrated embodiment may be employed as the movement mechanism of the movable rod 16 depending on the purpose and the form of the movable rod 16. The mechanisms include, for example, a knocking type mechanism generally used in a writing instrument such as a ballpoint pen and a screw type mechanism that causes the movable rod 16 to rotate and move in the longitudinal direction like a micrometer.

    [0037] The present invention may be used in any suitable hand tool other than the medical edged tool such as a surgical edged tool. For example, the present invention may be used ballpoint pens, shavers, box cutters, knives, edged tools like chisels, earpicks, forks, cosmetic brushes, and lipsticks. Various suitable components may be employed as the functional portion depending on the type of the hand tools.


    Claims

    1. A hand tool having a holder (1) and a movable head portion (21) to which a functional portion (24) is secured, wherein the movable head portion (21) is supported by the holder (1) in a manner movable relative to the holder (1) between an accommodated state, in which the movable head portion (21) is accommodated in the holder (1) together with the functional portion (24), and a projected state, in which the functional portion (24) is projected from the holder (1), wherein the orientation of the functional portion (24) in the accommodated state and the orientation of the functional portion (24) in the projected state are different from each other,
    wherein the hand tool further comprises a manipulation body (14) that supports the movable head portion (21), wherein the manipulation body (14) allows the movable head portion (21) to move between the accommodated state and the projected state,
    wherein the manipulation body (14) includes an elastic body (17) that applies an elastic force to the movable head portion (21) between the accommodated state and the projected state, wherein the elastic body (17) causes the movable head portion (21) to incline, characterized in that
    the movable head portion (21) is accommodated in the holder (1) by the elastic force of the elastic body (17), and in that the movable head portion (21) projects the functional portion (24) from the holder (1) against the elastic force of the elastic body (17).
     
    2. The hand tool according to claim 1, characterized in that the position of the functional portion (24) in the accommodated state and the position of the functional portion (24) in the projected state are different in a longitudinal direction of the holder (1) and in a direction perpendicular to the longitudinal direction.
     
    3. The hand tool according to claim 1 or 2, characterized in that the holder (1) and the movable head portion (21) include a guiding/restricting portion (9) that guides the movable head portion (21) in a manner movable relative to the holder (1) between the accommodated state and the projected state and allows the movable head portion (21) to incline.
     
    4. The hand tool according to claim 1, characterized in that the manipulation body (14) further includes a manipulating portion (15) having a finger support portion (20), wherein the elastic body (17) is arranged between the manipulating portion (15) and the movable head portion (21), and wherein the movable head portion (21) is supported by the elastic body (17).
     
    5. The hand tool according to claim 4, characterized in that the manipulating portion (15) and the elastic body (17) of the manipulation body (14) are formed integrally with the movable head portion (21).
     
    6. The hand tool according to claim 3, characterized in that the guiding/restricting portion (9) of the movable head portion (21) is a guide projection (22, 23), wherein the guiding/restricting portion (9) of the holder (1) includes a pressing portion (6) that presses and contacts the guide projection (22, 23) of the movable head portion (21) and a pressing escape hole (7) that releases the guide projection (22, 23) from pressing and contacting.
     


    Ansprüche

    1. Handwerkzeug mit einem Halter (1) und einem beweglichen Kopfteil (21), an dem ein funktioneller Teil (24) befestigt ist, wobei der bewegliche Kopfteil (21) auf eine in Bezug zu dem Halter (1) zwischen einem aufgenommenen Zustand, in dem der bewegliche Kopfteil (21) zusammen mit dem funktionellen Teil (24) im Halter aufgenommen ist, und einem ausgezogenen Zustand, in dem der funktionelle Teil (24) aus dem Halter (1) herausragt, bewegliche Weise von dem Halter (1) getragen wird, wobei sich die Ausrichtung des funktionellen Teils (24) in dem aufgenommenen Zustand und die Ausrichtung des funktionellen Teils (24) in dem ausgezogenen Zustand unterscheiden,
    wobei das Handwerkzeug weiterhin einen Betätigungskörper (14) umfasst, der den beweglichen Kopfteil (21) trägt, wobei der Betätigungskörper (14) die Bewegung des beweglichen Kopfteils (21) zwischen dem aufgenommenen Zustand und dem ausgezogenen Zustand ermöglicht,
    wobei der Betätigungskörper (14) einen elastischen Körper (17) umfasst, der zwischen dem aufgenommenen Zustand und dem ausgezogenen Zustand eine elastische Kraft auf den beweglichen Kopfteil (21) ausübt, wobei der elastische Körper (17) eine Neigung des beweglichen Kopfteils (21) verursacht, dadurch gekennzeichnet, dass
    der bewegliche Kopfteil (21) mittels der elastischen Kraft des elastischen Körpers (17) in dem Halter (1) aufgenommen ist und dass der bewegliche Kopfteil (21) den funktionellen Teil (24) gegen die elastische Kraft des elastischen Körpers (17) aus dem Halter (1) herausdrückt.
     
    2. Handwerkzeug nach Anspruch 1, dadurch gekennzeichnet, dass sich die Position des funktionellen Teils (24) im aufgenommenen Zustand und die Position des funktionellen Teils (24) im ausgezogenen Zustand in einer Längsrichtung des Halters (1) und in einer Richtung senkrecht zu der Längsrichtung unterscheidet.
     
    3. Handwerkzeug nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Halter (1) und der bewegliche Kopfteil (21) einen Führungs-/Begrenzungsteil (9) umfassen, der den beweglichen Kopfteil (21) auf eine in Bezug zu dem Halter (1) zwischen einem aufgenommenen Zustand und einem ausgezogenen Zustand bewegliche Weise führt und eine Neigung des beweglichen Kopfteils (21) ermöglicht.
     
    4. Handwerkzeug nach Anspruch 1, dadurch gekennzeichnet, dass der Betätigungskörper (14) weiterhin einen Betätigungsteil (15) mit einem Fingerstützteil (20) umfasst, wobei der elastische Körper (17) zwischen dem Betätigungsteil (15) und dem beweglichen Kopfteil (21) angeordnet ist, und wobei der bewegliche Kopfteil (21) von dem elastischen Körper (17) getragen wird.
     
    5. Handwerkzeug nach Anspruch 4, dadurch gekennzeichnet, dass der Betätigungsteil (15) und der elastische Körper (17) des Betätigungskörpers (14) einstückig mit dem beweglichen Kopfteil (21) ausgebildet sind.
     
    6. Handwerkzeug nach Anspruch 3, dass der Führungs-/Begrenzungsteil (9) des beweglichen Kopfteils (21) ein Führungsvorsprung (22, 23) ist, wobei der Führung-/Begrenzungsteil (9) des Halters (1) einen Druckteil (6) umfasst, der gegen den Führungsvorsprung (22, 23) des beweglichen Kopfteils (21) drückt und mit diesem in Berührung steht sowie ein Druckfreisetzungsloch (7), das den Führungsvorsprung (22, 23) vom Druck entlastet und die Berührung aufhebt.
     


    Revendications

    1. Outil à main ayant un support (1) de tenue en main et une partie (21) de tête mobile de laquelle une partie fonctionnelle (24) est solidaire, où la partie (21) de tête mobile est tenue en main par le support (1) de manière mobile par rapport au support (1) entre un état reçue, dans lequel la partie (21) de tête mobile est reçue dans le support (1) avec la partie fonctionnelle (24), et un état projetée, dans lequel la partie fonctionnelle (24) se projette du support (1), où l'orientation de la partie fonctionnelle (24) dans l'état reçue et l'orientation de la partie fonctionnelle (24) dans l'état projetée sont différentes l'une de l'autre,
    où l'outil à main comprend en outre un corps (14) de manipulation qui soutient la partie (21) de tête mobile, où le corps (14) de manipulation permet à la partie (21) de tête mobile de se déplacer entre l'état reçue et l'état projetée,
    où le corps (14) de manipulation comporte un corps élastique (17) qui applique une force élastique à la partie (21) de tête mobile entre l'état reçue et l'état projetée, où le corps élastique (17) amène la partie (21) de tête mobile à s'incliner, caractérisé en ce que
    la partie (21) de tête mobile est reçue dans le support (1) par la force élastique du corps élastique (17), et en ce que la partie (21) de tête mobile projette la partie fonctionnelle (24) à partir du support (1) contre la force élastique du corps élastique (17).
     
    2. Outil à main selon la revendication 1, caractérisé en ce que la position de la partie fonctionnelle (24) dans l'état reçue et la position de la partie fonctionnelle (24) dans l'état projetée sont différentes dans une direction longitudinale du support (1) et dans une direction perpendiculaire à la direction longitudinale.
     
    3. Outil à main selon la revendication 1 ou 2, caractérisé en ce que le support (1) et la partie (21) de tête mobile comportent une partie (9) de guidage/limitation qui guide la partie (21) de tête mobile de manière mobile par rapport au support (1) entre l'état reçue et l'état projetée et permet à la partie (21) de tête mobile de s'incliner.
     
    4. Outil à main selon la revendication 1, caractérisé en ce que le corps (14) de manipulation comporte en outre une partie (15) de manipulation ayant une partie (20) de support de doigt, où le corps élastique (17) est agencé entre la partie (15) de manipulation et la partie (21) de tête mobile, et où la partie (21) de tête mobile est soutenue par le corps élastique (17).
     
    5. Outil à main selon la revendication 4, caractérisé en ce que la partie (15) de manipulation et le corps élastique (17) du corps (14) de manipulation sont formés solidaires de la partie (21) de tête mobile.
     
    6. Outil à main selon la revendication 3, caractérisé en ce que la partie (9) de guidage/limitation de la partie (21) de tête mobile est une projection de guidage (22, 23), où la partie (9) de guidage/limitation du support (1) comporte une partie (6) de pression qui appuie sur et entre en contact avec la projection de guidage (22, 23) de la partie (21) de tête mobile et un trou (7) de relâchement de la pression qui libère la projection de guidage (22, 23) de la pression et du contact.
     




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    Cited references

    REFERENCES CITED IN THE DESCRIPTION



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    Patent documents cited in the description